William m



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Letters ,Patent IVO. 70,519, dated November 5, 1867.

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TO ALL WHOM IT MAY CONCERN:

Be it-known that I, WILLIAM M. BUTLER, of Waukegan, in the county of Lake, and State of Illinois, have invented a new and improved Machine for Sharpening Horse-Shoes and I do hereby dccla're that the followilug,` y is a full,clear, and exact descriptionl thereof, which vwill enable others skilled in -the art to make and use'ther same, reference being had to the accompanying drawings forming part of this specification This invention relates to a' machine, by which the calks of horse-shoes can lbe quickly and easily sharpened without taking the shoe off the horsves foot; the device operating so that the shoe-calks ofa whole span of horses can be completely sharpened in about twenty minutes.

The invention consists in the use of a revolving cutter, which is secured on a crank-shaft, the latter being attached to a frame, which is, by means of thumb-screws, secured to the shoe., The shaft to which the cutter is secured is adjustable laterally as wellas forward and backward, und the frame is also'adjustable so that the device can be adapted on all sizes and kinds of horse-shoes. In the annexed `'drawing my invention is fully illustrated- Figure 1 being a vertical cross-section of this machine, and

Figure 2 a plan or top view of the same.

Similar letters of reference indicate like parts. Y

A represents an oblong or square frame made ofrmetal or wood, or any other suitable material. On the same arc arranged projecting flanges a a, through which pass thumb-screws b b, whereby it can be fastened lto the horse's foot. Through this framejs passed a shaft, B, to one end of which is secured a cutter, C, while the other end is provided with a. crank, a'. This shaftlrests in bearings e e, which slide in slots in the frame A, so that the shaft B can be moved from one end to the other of the frame. The shaft B can be moved forward and backward in its bearings by means of a nut,f, tting around a screw-thread cut upon the' said shaft, and by av spiral spring, g, secured Abetween the outside of the frame and the crank d, as shown. The spring draws the cutter towards the frame, but yields to any changes made by turning the nut. The frame A can also be extended, instead of turning the nutf, as is indicated in iig. 2,.by the overlapping liangcs t L, and by bolt and nut z'. The cutter-shaft B is moved laterally by a screw, 7c, secured with a swivel-joint to a sleeve, Z, said sleeve fitting around and sliding on the shafty B, as shown.' The said screw k vis passed through a nut inframe A, and is turned either by a crank, m, and as it is turned in either one or the otheridirection the shaft B is either pulled or pushed by it, so as to be regulated at will.

From the above it will be seen that this device can be' easily adjusted, so as to tudiierent-sized. shoes, and

be brought opposite to the calks, as may be desired. When it is to sharpen the toe-calli, the fced-screw is, turned as well as the lshaft B, s o that the cutter is brought in contact with the whole length of calk. For sharpening the heel-calks the frame must be turned around, and so arranged on the foot' that both calks may be sharpened without refitting the frame, by just moving the cutter by means of the feed-screw from one calk to the other.

Having, thus described my invention, what I claim as new', and desire to secure by Letters Patent, is

1. A machine for sharpening horseshoes, made and operating substantially as herein shown and described.

2. The device for moving the cutter C forward or backward, consisting of the spring g, nutf, and shaft B, all made and operating substantially as herein shown and described.

3.' The device for moving the cutter laterally, consisting of the slotted frame A, screw k, sleeve Z, and shaft B', all made and operating substantially as herein shown and described.

4. The frame A, when provided at thecorners with projections a and set-screws b, so as to be easily fastened on any sized shoe, and when provided with slotted flanges L h, and bolts and nuts z', forthe same purpose substantially as set forth.

WILLIAM M. BUTLER.

Witnesses:

FRANCIS E. MoRAN, JUSTIN RYAN. 

